Module1.vb
Imports System.IO Imports System.Net Imports Newtonsoft.Json.Linq Module Module1 ' (!) If you are getting '(403) Forbidden' error please ensure you have set the correct API_KEY ' The authentication key (API Key). ' Get your own by registering at https://secure.bytescout.com/users/sign_up Const API_KEY As String = "***********************************" ' Direct URL of source file to search barcodes in. Const SourceFileURL As String = "https://s3-us-west-2.amazonaws.com/bytescout-com/files/demo-files/cloud-api/barcode-reader/sample.pdf" ' Comma-separated list of barcode types to search. ' See valid barcode types in the documentation https://secure.bytescout.com/cloudapi.html#api-Default-barcodeReadFromUrlGet Const BarcodeTypes As String = "Code128,Code39,Interleaved2of5,EAN13" ' Comma-separated list of page indices (or ranges) to process. Leave empty for all pages. Example: '0,2-5,7-'. Const Pages As String = "" Sub Main() ' Create standard .NET web client instance Dim webClient As WebClient = New WebClient() ' Set API Key webClient.Headers.Add("x-api-key", API_KEY) ' Prepare URL for `Barcode Reader` API call Dim query As String = Uri.EscapeUriString(String.Format( "https://bytescout.io/v1/barcode/read/from/url?types={0}&pages={1}&url={2}", BarcodeTypes, Pages, SourceFileURL)) Try ' Execute request Dim response As String = webClient.DownloadString(query) ' Parse JSON response Dim json As JObject = JObject.Parse(response) If json("error").ToObject(Of Boolean) = False Then ' Display found barcodes in console For Each token As JToken In json("barcodes") Console.WriteLine("Found barcode:") Console.WriteLine(" Type: " + token("TypeName").ToString()) Console.WriteLine(" Value: " + token("Value").ToString()) Console.WriteLine(" Document Page Index: " + token("Page").ToString()) Console.WriteLine(" Rectangle: " + token("Rect").ToString()) Console.WriteLine(" Confidence: " + token("Confidence").ToString()) Console.WriteLine() Next Else Console.WriteLine(json("message").ToString()) End If Catch ex As WebException Console.WriteLine(ex.ToString()) End Try webClient.Dispose() Console.WriteLine() Console.WriteLine("Press any key...") Console.ReadKey() End Sub End Module